diff --git a/bacnet-stack/src/fifo.c b/bacnet-stack/src/fifo.c
index 1f5c9997..aee8c0ce 100755
--- a/bacnet-stack/src/fifo.c
+++ b/bacnet-stack/src/fifo.c
@@ -47,7 +47,7 @@
 * ALGORITHM:   none
 * NOTES:       none
 *****************************************************************************/
-static volatile unsigned FIFO_Count (
+static unsigned FIFO_Count (
     FIFO_BUFFER const *b)
 {
     return (b ? (b->head - b->tail) : 0);